Update: Got rid of the C24s. Didn't really like them too much. The freewheel noise was annoying and they actually felt pretty harsh-riding, compared to my Fulcrum 3s. I upgraded to FFWD 58mm deep carbon wheelset with 25c tires instead of 23. What a difference! The combination of the deep carbon and the wider tires has literally transformed the ride. It's now absorbing most of the road noise/vibration and the deeper wheels make it easier to hold your speed (at higher speeds). Love the combo now...